Review Day 1

Front

What is polarity in water?

Back

Polarity refers to the property of water molecules having a partial positive charge on one side (hydrogen atoms) and a partial negative charge on the other side (oxygen atom), allowing them to form hydrogen bonds.

Front

What is an inference?

Back

An inference is a logical interpretation or conclusion drawn from prior knowledge and experience, often based on observations.

Front

What is a control group in an experiment?

Back

The control group is the group in an experiment that does not receive the independent variable, serving as a baseline to compare the effects of the independent variable.

Front

What is a hypothesis?

Back

A hypothesis is a possible explanation for a set of observations or a proposed answer to a scientific question that can be tested through experimentation.

Front

What is the smallest unit of matter?

Back

The smallest unit of matter is an atom, which consists of protons, neutrons, and electrons.

Front

What is cohesion in water?

Back

Cohesion is the property of water molecules to stick to each other due to hydrogen bonding, which contributes to surface tension.

Front

What is adhesion in the context of water?

Back

Adhesion is the property of water molecules to stick to other substances, which allows water to climb up plant roots and stems.

Front

What is surface tension?

Back

Surface tension is the elastic-like force at the surface of water that makes it difficult to break, caused by the cohesive forces between water molecules.

Front

What is an observation in scientific terms?

Back

An observation is the act of noting and recording something using the senses, which can lead to questions and hypotheses.

Front

What is the difference between an experimental group and a control group?

Back

The experimental group receives the independent variable being tested, while the control group does not, allowing for comparison of results.